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Lorven Technologies Inc.

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Senior Java Developer / Technical Lead

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Summary

Senior Java developer / technical lead in Toronto designing and delivering secure, high-performance banking and payment applications: building Spring Boot microservices, REST APIs, and Kafka event-driven services on Kubernetes/OpenShift/AWS, with MongoDB/Oracle/PostgreSQL data layers, CI/CD, monitoring, and mentoring of other developers.

We are seeking an experienced Senior Java Developer / Technical Lead to design and deliver secure, scalable, high-performance banking and payment applications. The ideal candidate will have strong expertise in Java, Spring Boot, microservices, REST APIs, Kafka, database optimization, and cloud-native technologies, along with proven technical leadership experience.

Key Responsibilities

  • Design and develop Java/Spring Boot microservices, REST APIs, and event-driven applications.
  • Build high-volume, low-latency distributed services for banking, payments, and account servicing.
  • Implement batch processing, data migration, archival, synchronization, and recovery solutions.
  • Work with MongoDB, Oracle, PostgreSQL, and other relational/NoSQL databases.
  • Deploy and migrate applications using OpenShift, Kubernetes, AWS, or similar cloud platforms.
  • Develop CI/CD pipelines using Jenkins, GitHub, Maven, Gradle, and Harness.
  • Implement API security using OAuth 2.0, TLS, and encryption.
  • Lead technical design, code reviews, testing, releases, and production support.
  • Mentor developers and establish coding standards and engineering best practices.
  • Monitor application performance using Splunk, Kibana, AppDynamics, Instana, or Datadog.
  • Collaborate with architecture, QA, DevOps, security, and product teams to improve application reliability and performance.

Required Skills

  • 8+ years of experience in Java/J2EE development.
  • Strong expertise in Java, Spring Boot, Spring MVC, Spring Data, and Spring Batch.
  • Hands-on experience with microservices, REST APIs, Kafka, and enterprise messaging technologies such as RabbitMQ, IBM MQ, or JMS.
  • Strong database experience with MongoDB and Oracle/PostgreSQL.
  • Experience with Kubernetes, OpenShift, AWS, or equivalent cloud platforms.
  • Proficiency in Jenkins, Maven, Gradle, GitHub, SonarQube, and CI/CD pipelines.
  • Strong understanding of API security, OAuth 2.0, TLS, and encryption.
  • Experience with automated testing, including JUnit, Mockito, integration testing, and performance testing.
  • Production troubleshooting, application monitoring, and performance optimization experience.
  • Proven technical leadership, mentoring, and engineering delivery skills.

Preferred Qualifications

  • Banking, payments, cards, digital wallets, or account-servicing domain experience.
  • Experience with Cassandra, MariaDB, Apigee, AWS, or Google Cloud.
  • Familiarity with Autosys and enterprise batch scheduling.
  • AWS or other relevant cloud certifications.
  • Experience with AI-assisted software development tools.

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